Stress

A color...
A color that you can only describe as icky...
A color like olive green that you see once and it sticks in your head forever...

A sound...
A sound you can only describe as ear-splitting...
A sound like squeaky chalk on a chalkboard and it repeats itself in your head...

A word...
A word that you can only describe as stomach-churning...
A word such as gullable that people repeat and repeat, driving you crazy...

It is stress...
It is what you can only describe as unbearable...
It is an idea that has been driveen into our head over and over like in oil drills...